<template>
<div>
  <!--    面包屑导航区域-->
  <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>数据统计</el-breadcrumb-item>
    <el-breadcrumb-item>数据报表</el-breadcrumb-item>
  </el-breadcrumb>
  <el-card>
    <!-- 2.为ECharts准备一个具备大小（宽高）的Dom -->
    <div id="main" style="width: 750px;height:400px;"></div>
  </el-card>
</div>
</template>

<script>
// 1.引入 echarts
import echarts from 'echarts'
import _ from 'lodash'
export default {
  name: 'Report',
  data () {
    return {
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  methods: {
    async draw () {
      // 3.基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'))
      // 4.指定图表的配置项和数据
      // var option = {
      //   title: {
      //     text: 'ECharts 入门示例'
      //   },
      //   tooltip: {},
      //   legend: {
      //     data: ['销量']
      //   },
      //   xAxis: {
      //     data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
      //   },
      //   yAxis: {},
      //   series: [{
      //     name: '销量',
      //     type: 'bar',
      //     data: [5, 20, 36, 10, 10, 20]
      //   }]
      // }
      // 5.使用刚指定的配置项和数据显示图表
      const { data: res } = await this.$http.get('reports/type/1')
      if (res.meta.status !== 200) {
        return this.$message.error('获取图表信息失败！')
      }
      const option = _.merge(this.options, res.data)
      myChart.setOption(option)
    }
  },
  created () {},
  // 此时页面上的 元素 已经渲染完毕了
  mounted () {
    // 显示数据报表
    this.draw()
  }
}
</script>

<style scoped>

</style>
